Mechanism for working pulpous material



June 18, 1929i w, JESPERSEN 1,717,733

ISIHIAIISNk I'l WORKING PULPOUS HATISRIAL Original Filed May 16. 1924 @gan/ayez" @Mm Patented Juno .18, 1929.

IIELGO wreeo J'SPIBSTN, orwnsTnnN sPnINos,

ELECTRIC COMPANY, mooRPOBATED, NEW Yonx.

IfIm'INoIa v'l'lssIofNoa To WESTERN or Nnwqoax, N. Y., .A CORPORATION OF HICH'LNIBMFR WORKING MATERIAL.

Application-:medici 16, 1924, Serial No. 7l3,705.` Renewed October 1 8, 1926.

This inventiony relates to improvements in mechanism :for working pulpous materlal, and more particularly to .mechanism yfor forming suc-h material to constitute a homogenous coating for cores in strand form such as wire and the like.

Mechanisms made in accordance with this invention are particularly Well adapted for use in connection with the method and ap'- paratus for coating cores disclosed in the copending application of H. G. Walker, Serial No. 621,242, filed February 26, 1923, butit 1s to be understoodvthat the invention is not limited to such use, but only in so far asdefined by the appended claims.

An object of the invention is to provide improved means for adjusting the forming `member of a forming mechanism adapted to -work pulpous material into a homogenous coating for cores.

Another object of the invention is to provide improved means for reulating the force with which a. formin mem er of a forming mechanism engages t e pulpous material on a core.

Another object of the invention is to provide a forming mechanism which will operate upon the pulpous material so as to form 1t into a homogeneous and uniform coating.

A further object of the invention is to provide a forming mechanism which'may be o perated at high speed and will not strip t e coating material from the core during the forming operation.

In one embodiment of the invention the forming mechanism comprises a rotatable head adapted to carry a plurality of forming members, the forming members being pivotally mounted in the head and disposed to en-V gage the pul ous material on a core being drawn throng the head. Each forming member comprises a blade rovided with an apertured boss, whereby t e blade is rigidly secured to a tubular shaft, which is in turn rotatably journaled in the head. A Wire having the greater portion of its length disposed in the tubular shaft has one of its ends rigidly secured to the tubular shaft. Means is provided at the other end of the wire for twisting the wire to place it in torsion. The wire then tends to force its .associated forming blade into pressing engagement with the pulpous material on the core being drawn through the head. The amount of'torsion in the wire is ad`ust-able. y A sleeve disposed in the head may adjusted to space the forming blades a predetermined distance apart so that the=forming members will work the pulpousmaterial-finto a uniform coating.

Other objects Of-the invention will become apparentes-the detail description progresses,

reference being had to the accompanying.

drawing,in which.l

Figul `i`s`y an elevation of a forming'mechanism embodying the invention; 1 Fig. 2 is a` section taken on lines 2 2 of `ig. l;

Fig. 3 is-an enlar ed detailed view showing the mechanism for ringing one of the forming members into pressing engagement with the pulpous material on the core 1g. 4isan end elevation partly in section of the mechanism shown in Fig. 1,

F Fig. 5' isa section takenon line 5`5 of ig.1 Figs. 6 and 7 are enlarged sectional views illustrating the manner in which the pulpous material is applied to the core before it is delivered tothe forming mechanism; and Figs. Sand 9 are enlarged sectional views showing the forming of a pulp coating during the forming operation and after the completion of the forming operation respectively.

The forming mechanism shown in the accompanying drawing is especially adapted to Operate inA conjunction with apparatus shown in the aforementioned application of H. G. Walker, Serial N o. 621,242, filed February 26, 1923, which apparatus is adapted to apply pulpousmaterial to a core and comprises a foraminous member and a plurality of feltcovered squeezing rolls. In the operation of this apparatus, the core is first brought into contact with pulpous material upon the foraminous member and t en an additional amount of pulpous material is deposited upon the core and the foraminous member. The pulp, 4so deposited, and the core are then brought into contact with one of the squeezing rolls which cooperates with the foraminous lmember to squeeze out the ree liquid, so to speak, in the pulp coating. The partially dried pulp adheres to the felt of the squeezing roll in the form of a ribbon and'between'it and its cooperatin roll, the contour imparted to the ribbon by t e squeezing rolls being shown in Fig. 7.

The forming mechanism embodying the features of the present invention is designed to receive the core and its ribbon from the squeezing rolls and to wrap the projecting edges around each other until it conforms substan tially to the shape of the core. The appearance of the coating after it is first acted upon by the forming mechanism is shown in Fig.

` tion,

8, and the appearance'thereofafter the forming action is completed is shown in Fig. 9.

Referring to the drawing, thc forming mechanism comprises a rotatable head 1() coinposed of a body portion `11 and an end plate 12. The head has one of' its ends threaded into' one end of a sleeve 13', which is rotatably journaled in suitablev bearings, one of which is shown at 14. A pulley (not shown)"may be ri'gidlysecured to the sleeve 13 and will provide means whereby the sleeve and head may be rotated at any desired speed. The head and sleeve are'adap'ted to accommodate a core carrying ya ribbon 16 of pulpous material. When the formingl mechanism is in operathe core 15 with its ribbon 16 is drawn through the forming mechanism by any suit able means (not shown), the core and ribbon entering the mechanismfrom the left, Fig. 1. The head 10 may be termed a rotatable carrier as it carries a plurality of forming members 18 adapted to engage the ribbon of pulpous material and to form 1t into a uniform coating for the core, the completed coat- `head 10.

ing bein shown in Fig. 9.` j y Each orming member 18 comprises a plate 19 adapted to engage the pulpous material and provided with an apertured boss 2O whereby the plate is rigidly secured to one of a lurality of shafts 21 rotatably journaled 1n the head 1G, a pin 22 being employed to secure the plate 19`to the tubular shaft 21. As best shown in Fig. 3,'one end of each tubular shaft 21 is rotatably journaled in a' recess 23 in the bod portion 11 of the head 10, the end thrust o the shaft being received by a metallic ball '24 disposed in the recess. The other end of each shaft 21 is rotatably Yjournaled in a dial member 25 which is in turn rotatably j'ournaled in the end plate 12 of the Each tubular shaft 21 is provided with a torsion wire 26 which projects from one end of the tubular shaft. The inner end of the torsion wire is ,soldered to the tubular shaft as indicated at 27, the tubular shaft 21 being provided withV a transverse hole 28 to receive the solder. `The outer end of each torsion wire 26 is bent to lie in a slot 30 formed in the associated dial 25'. This construction permits the torsion in the wire 26 to be adjusted asthe dial 25 may be rotated to twist the wire in either direction, lthe slot 30 vproviding means whereby an edged tool may be emvof the ribbonaround the core and'.

ployed to rotate the dial. Each dial 25 has a washer 31 rigidly secured tedtgtlierwvasher being adapted to engage the inner face of the end plate 12 and to prevent longitudinal displacement of the dial"'lrelativeY to the end plate. Means isv provided "for locking each dial in any one of its adjusted positions. This means comprises .a pin,33 looselyseatedin a bore 34 formed in the end plate 12'.. The pin 33 is provided with' anA arcuate surface 35 adapted tofrictionally engage the dial, a set screw 36 being provided to force the pin 33 into engageinentwith the dial.'

A counterweight 38 is provided for each plate 19. The counterweight- 38 is pivotally mounted on the associated tubular shaft 21 and may be secured i-n a'plurality of adjustable positions with respect `to-fthe'plate by means of a plurality of set screws`39t-hreaded into the counterweight and adaptedtol :engage the tubular shaft. The eo'unterwei'ghts 38 may be sec'ured'infositions whereinthey balance the` plates "19 uring thd operation of the vforming mechanism, it beingfreadil-y 'f understoo'dthat during the operationof ythe lforming mechanism, the plates 19 tend to draw away from lthe core 15 because of the centrifugal force generated by the plates when they are carried bodily'around-the core. This tendency of theA plates to draw away 'from the core is overcome by thecounterweights38. l, n

A -sleeve 40 rotatably journaled in the head 10 and provided with triangular lugs 41 adapted to enter betweentheplate 18 may be brought intoaplurality of adjustable -positions with respect to theplates to' space the plates from the core 15. The means for bringing the sleeve 4() intola plurality of adjustable positions with respect to the plates 19 comprises a pin 42 -rotatably journaled inthe head .10 and provided with a pin v43 adapted to engage a circumferential slot 44 formed in the sleeve '40. The Cpin 43"projects from one end ofthe pin 42 an is disposed eccentrically with respect to the axis of rotation thereof. It is obvious that if thepin 42 were angularly displaced, the pin 43 would displace the sleeve 40 toward or away from the plates 19, so that Ithe triangular lugs`41 may gauge the A.positions of the plates18l withl respect to the core. It will he noted that thefpin 42 is providedwith a slot 45 adapted to. receive a screw driver or the like, thus enabling the operator torotate the pinto bring the sleeve 40 into an adjusted position. A yset screw 46threaded into the head l() engages-an annular groove 47 formed4 in the pin 42 'and may be forced against the pin until the pin vis locked against rotation. A pin 50 driven into the head 10 projects into a longitudinal 'slot 51 formed inthe sleeve 40 and is adapted to prevent angular displacement of the sleeve relative to the head.

In the operation of the device the torsion of lio the Wire 26 is irst adjusted by means of the dials 25 which are graduated for this purose. The countlerweights 38 are then ad- )usted to positions corresponding with theamount of'trsion obtaining in the wires 21. The vforming mechanism is then rotated and the core 15 with its ribbon 16 of pulpous material is drawn between the plates 19 which wrapthe ribbon of pulpous material around the core until the pulpous material forms a uniform coating for the core.

What is claimed is:

1. In a mechanism for working pulpous material on a core, a forming member comprising a movable element, a straight wire 2. In a mechanism for working pulpous 20 material on a core, a forming member comprismg a movable element, a straight wire having one .end secured to the .movable element, and means for rotating the other end of the wire to cause the wire to force the mov- 25 able element against said pulpous material. In witness whereof, I hereunto subscribe my name this 29th day of AprilA. D., 1924.

HELGO WIGGO JETSPERSEN. 

